OLTP systems process transactional data in real-time for operational needs, while OLAP systems analyze historical transactional data to identify trends to help with strategic decision making. Two-tier client-server models have clients connecting directly to the database server, while three-tier models separate the presentation, application processing, and data storage into independent tiers for improved scalability and flexibility. ERP systems often require additional bolt-on software modules to address needs not covered by the core ERP system, such as customer relationship management.

1. AIS101
QUIZ-CHAPTER 11- Enterprise Resource Planning Systems
1. How are OLTP and OLAP different? Provide some examples to explain.
2. Distinguish between the two-tier and three-tier client-server models. Describe when each
would be used.
3. Why do ERP systems need bolt-on software? Give an example of bolt-on software.
4. Your organization is considering acquiring bolt-on software for your ERP system. What
approaches are open to you?
5. Explain why the data warehouse needs to be separate from the operational database.